Stay-bolt structure.



"INESSES E. I. DODDS. STAY BOLT STRUCTURE. APPLICATION FILED APR. 26. ms.

Patented Jan. 21, 1919.

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UNITED snares rarer ETHAN I. DODDS, OF PITTSBURG PENNSYLVANIA, ASSIGNOR T FLANNERY BOLT COMPANY, OF PITTSBURGH, PENNSYLVANIA.

STAY-BOLT STRUCTURE.

1,291,787. Specification of Letters Patent Patented Jan. 21, 1919.

7 Application filed April 26, 1918. Serial No. 230,906.

To all whom it may concern: pin or key 13. The cap head 12 may have a Be it known that I, ETHAN I. Down, a general hemispherical shape and is provided citizen of the United States, and a resident with a peripheral flange 14 which freely enof Pittsburgh, in the county of Allegheny circles the outer end portion of the bearing and State of Pennsylvania, have invented sleeve extension. 0

certain new and useful Improvements in The bearing sleeve extension 5 is provided Stay-Bolt Structures; and I do hereby deinteriorly at or near its free outer end with clare the following to be a full, clear, and flanges or shoulders 15 spaced apart in a exact description of the invention, such as manner to form notches 16. A securing 10 ,will' enable others skilled in the art to which member 17 is threaded on the shank l0 and 1t appertains to make and use the same. when the parts are first assembled, this look- This invention relates to improvements in ing member may rest upon the shoulder 11 staybolt structures and more particularly to of the enlargement 9. The locking member the closure construction for the bearing is provided with lugs 18 which pass through 15 sleeve, -the object of the invention being to the notches 16 lwhen it is inserted into the provide simple and efficient means whereby sleeve extension 5, and when said locking a removable cap or closure may be normally member is turned, the lugs will become disheld tightly to its seat and at the same time posed behind the flanges or shoulders 15 in permit of the quick removal of said cap to the bearing sleeve extension 5. The lock- 20 enable the bolt to be tested and as quickly ing member is also provided with stop shoulreplaced and secured. ders 19 to engage end portions of the flanges With this and other objects in view, the or shoulders 15 and thus limit the turning invention consists in certain novel features movement of said lockin member. of constructlon and combinations of parts When the parts shall have been assembled 26 as hereinafter set forth and pointed out in as above described, continued turning force the claims. applied to the cap head will cause the look- In the accompanying drawings; Figurel ing member to tend to move outwardly on is a sectional view illustrating an embodithe threaded shank and the cap or closure to ment of my invention; Fig. 2 is a plan view be pressed tightly against its seat. Thus the 80 with the cap head removed, and Fig. 3 is a cap or closure will be securely held in its separate view of the locking member. normal position.

1 represents a bearing sleeve which may t is apparent that by a reversal of the be externally threaded to screw through a operations above described, the cap or 010- suitable hole in a boiler sheet and having a sure will be unlocked and may be quickly re 36 curved interior face 2 which serves as a moved to give access to the head of the staybearing for the curved or spherical head 3 bolt for testing the latter. It is equally apof a stay bolt 4. parent that the parts may be as quickly rehe body portion of the sleeve is made assembled and the cap or closure secured in with an extension 5, the inner wall of which its normal position. 0 is ofiset somewhat from the bore of the body Having fully described my invention avhat of the sleeve to form an annular seat 6 for a I claim. as new and desire to secure by Letcap or closure 7,the latter being made on ters-Patent, is its underside near its periphery with a slight 1. In a staybolt structure, the combination annular enlargement 8 to facilitate accurate with a bearing sleeve having a cap seat and seating of said cap or closure. having an extension provided with internal The cap 7 is provided on its top with an shoulders, of a cap to rest on said seat, a enlargement 9 from which a shank 10 havthreaded shank rigid with said cap, a cap ing a left hand screw-thread projects-said head secured to said shank and closing the shank having such diameter relatively to outer end of the bearing sleeve extension, that of the top of the enlargement 9 as to and a securing member threaded on said leave an annular shoulder 11 surrounding shank, said securing member having lugs to the base of the shank. The outer end porunderlie the shoulders in the sleeve extention of the threaded shank l0 enters a sion and also having stops to engage said threaded socket in a cap head 12 and is last-mentioned shoulders. rigidly secured to the latter by means of a 2. In a staybolt structure, the combina- 11o tion with a bearing sleeve having a cap seat and a sleeve extension, said sleeve extension having internal shoulders at its outer end portion spaced apart to form notches between their ends, of a cap to enter said sleeve extension and rest on said cap seat, a threaded shank rigid with said cap, a cap head threaded on and rigidly secured to said shank, said cap head having a flange encircling the outer end portion of said sleeve extension, and a securing member threaded on said shank and having lugs to enter behind the shoulders in the sleeve extension and having stops to engage said shoulders.

3. In a staybolt structure, the combination with a bearing sleeve having a cap seat and a sleeve extension, the latter having internal shoulders spaced apart at its outer Copies of this patent may be obtained for five cents each, by addressing the Washington, D. 6.

end portion, of a cap to rest on said seat, an enlargement on said cap, a threaded shank projecting from said enlargement, the-latter providing an annular shoulder around the base of said shank, a cap head secured to said shank, a securing member on said shank and disposed over said annular shoulder, said securing member having shoulders to underlie the shoulders in the sleeve extension and also having stops to engage said shoulders. Y

In testimony spec fication in mg W tnesses.

whereof, I have signed this the presence of two subscrib- ETHAN I. DODDS.

Witnesses:

S. G. NOTTINGHAM, R S. FERGUSON.

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